Valve bag



J. F. DOYLE May 2, 1944.

VALVE BAG Filed Feb. e, 1941 mm1 mmm IM El k www IVENTOR JAMES F D0 nfPatented May Z, 1944 zarten UNHED vS'liei'li FTENT OFFICE g VALVE BAGJames F. Doyie, Forest Hills, Long island, N. Y.,

assignorto Arkell Safety Bag Company, New York, N. a corporation of NewYork geneanet February 6, 1941, seria; No. 377,614

` 2 claims. (ci. 15in-1e) The present invention relates to valve bags,and has special reference to bags of burlap or other textile materialthat are lined with stretchable paper,

The principal object of the invention is to provide a bag of thischaracter that is simple in construction may be cheaply manufactured andis strong and convenient in use.

Referring to the accompanying drawing,

Figure 1 is a sectional side View, partly diagramn matical and partlybroken away of a partially completed bag embodying the invention, theburlap or textile outer covering being shown in section and the liningin sectional elevation;

Fig. 2 is a similar view of a modified construction but with the outerenvelope partially brokeny away;

Fig. 3 is a vertical sectional view on an enlarged scale of the valveportion of the bag with the valve tucked in;

Fig. 4 is a sectional view taken on the line :i-il of Fig. 3;

Fig, 5 is a side elevation of the valve portion of the completed bag;

Fig. 6 is a sectional view, taken on the line G- of Fig. 5;

Fig. '7 is a view corresponding to Fig. 5 of a modified construction;and

Fig. 8 is a sectional View, taken on the line 8-8 of Fig. 7.

The lined bag illustrated in the drawing, comprises an outer envelope orbag 2 of burlap or other textile material and a lining of paper 4.

The textile bag 2 may be of the usual form as shown.

The paper lining l5 as shown is provided with crinkles 6 extendingtransversely of the lining to provide for longitudinal stretchability,and flattened corrugations 3 extending longitudinally to provide forcircumferential stretchability.

The lining d illustrated in Fig. l of the drawing may be made of arectangular sheet of paper which is folded over upon itself on atransverse line. The overlying longitudinal edges i 2 on each Side ofthe lining are folded over and closed by a line of stitching Hi.Preferably the lining is provided with a valve extension It at onecorner of its upper edge.

With the bag 2 and lining i thus formed, the lining t may be inserted inthe bag 2 with the upper edge of the lining substantially flush with theupper edge of the bag.

The valve extension I6 together with the associated corner of the liningmay then be tucked in, the folding being substantial-ly on a diagonalline i8.

Such tucliing in of the valve extension positions its upper edges 2E)substantially flush with the upper edge 0f the bag and between the upperedges of the sides of the lining.

When the valve extension has thus been tucked in, the upper margin 22 ofthe bag and lining may be folded over and secured by a line of stitching24 which closes the upper ends of the bag and lining except for thevalve, and secures the upper edges of the valve extension and the tuckedin portion of the bag 2 between the side walls of the lining.

With the bag thus formed, the upper edges of the valve are firmly andsecurely held between the erinkled paper lining and there is no dangerof the stitches pulling out or the lining becoming torn from thestitches during the operation of lling the bag. Also, when the bag isfilled the soft valve provided by the valve extension of the lininginsures tight closing of the valve. With the lining thus applied, it isfree to stretch with the outer envelope or bag 2 during the operation offilling the bag through the valve as Well as during the handling of theiilled bag so that no undue strain is placed on the lining,substantially the entire strain being borne by the textile bag.

t Will be apparent that my improved lined bag is simple in construction,may be cheaply manu factured, is strong and convenient in use, and isespecially adapted to be made in large sizes for packaging sugar orother rlnely divided material in one hundred pound lots.

In some cases satisfactory results may be ob.- tained without turningover the upper margin 22 of the bag, the upper edge of the bag beingclosed merely by a line of stitching 2S, as illustrated in Figs. 'l and8. With this form, the four layers of stretchable paper through whichthe stitches extend and the two burlap layers insure the valve beingsecurely held Without danger of the valve lining tearing away from thestitches.

In the form illustrated in Fig. 2, a lined tube is shown formed byfolding the lining blank longitudinally and pasting the edges togetherin overlapping relation to provide a longitudinally extendingoverlapping seam 39. The outer envelope or bag is also formed by makinga bag tube and securing together the longitudinal edges thereof inoverlapping relation to form a longitudinally extending overlapping seam32. With this construction the lining tube and outer envelope or bagtube may be either separately formed and then assembled or formedsimultane.v

ously. The lower end of the thus lined bag tube, is folded over andclosed by a line of stitching 34. The valve corner of the lined bag thusformed may be tucked in and the upper end of the bag closed in the samemanner as the form illustrated in Fig. 1 as above described.

It will be apparent that in the case of this construction as well as theother constructions described the paper lining is free to adjust itselfto the bag and no undue strain is placed on the valve or other parts ofthe lining either during filling or handling of the lled bag.

As will be evident to those skilled in the art, my invention permitsvarious modifications without departing from the spirit thereof or thescope of the appended claims. Y

What I claim is: Y

1. In a container of the class described comprising a textile bag and alining of paper inserted in said bag, the paper lining having crinkles20 extending transversely thereof to provide for lon;

gitudinal stretchability and having longitudinally extending means toprovide for circumferential stretchability, the improvement whichcomprises said lining having a valve extension at one corner of themouth thereof integral therewith, said valve extension and thecorresponding corner of the bag being tucked in to form a valve with thelining of the valve extending a distance inwardly beyond said tucked invalve portion of the bag, and a seam securing together and closing themouths of the bag and lining and securing the upper edges of the sidewalls of the valve.

2. In a bag of textile materia1 lined with crnkled paper, theimprovement which consists in a corner of the bag and lining tucked into form a valve, the tucked in portion of the lining extending adistance inwardly beyond the tucked in portion of the textile material,said extending portion being integral with the lining.

JAMES F. DOYLE.

